WO2022215543A1 - Dispositif de retenue d'occupant et procédé de fabrication de dispositif de retenue d'occupant - Google Patents

Dispositif de retenue d'occupant et procédé de fabrication de dispositif de retenue d'occupant Download PDF

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Publication number
WO2022215543A1
WO2022215543A1 PCT/JP2022/014002 JP2022014002W WO2022215543A1 WO 2022215543 A1 WO2022215543 A1 WO 2022215543A1 JP 2022014002 W JP2022014002 W JP 2022014002W WO 2022215543 A1 WO2022215543 A1 WO 2022215543A1
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WO
WIPO (PCT)
Prior art keywords
belt
airbag cushion
occupant
airbag
occupant restraint
Prior art date
Application number
PCT/JP2022/014002
Other languages
English (en)
Japanese (ja)
Inventor
徹也 松下
Original Assignee
オートリブ ディベロップメント エービー
徹也 松下
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by オートリブ ディベロップメント エービー, 徹也 松下 filed Critical オートリブ ディベロップメント エービー
Priority to JP2023512933A priority Critical patent/JP7464792B2/ja
Priority to CN202280023610.6A priority patent/CN117500701A/zh
Priority to EP22784528.6A priority patent/EP4321393A1/fr
Publication of WO2022215543A1 publication Critical patent/WO2022215543A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/2334—Expansion control features
    • B60R21/2338—Tethers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/207—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in vehicle seats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/237—Inflatable members characterised by the way they are folded
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R2021/23107—Inflatable members characterised by their shape, construction or spatial configuration the bag being integrated in a multi-bag system
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/23138—Inflatable members characterised by their shape, construction or spatial configuration specially adapted for side protection
    • B60R2021/23146—Inflatable members characterised by their shape, construction or spatial configuration specially adapted for side protection seat mounted
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/2334—Expansion control features
    • B60R21/2338—Tethers
    • B60R2021/23386—External tether means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration

Definitions

  • the present invention relates to an occupant restraint device that restrains an occupant seated on a seat of a vehicle and a method of manufacturing the occupant restraint device.
  • An airbag device is a safety device that is activated in an emergency such as a vehicle collision, and uses an airbag cushion that is inflated and deployed by gas pressure to receive and protect the occupant.
  • An airbag device There are various types of airbag devices depending on the installation location and application.
  • a side airbag system is implemented in which an airbag cushion inflates and deploys from the side of the seat to both sides of the occupant.
  • the occupant restraint device of Patent Document 1 is provided with a belt 140 that expands as the airbag cushion inflates and deploys.
  • the belt 140 utilizes tension to restrict the movement of the airbag cushion, making it possible to enhance the occupant restraint performance of the airbag cushion.
  • an object of the present invention is to provide an occupant restraint device and a method of manufacturing an occupant restraint device that can further improve the occupant restraint performance of an airbag cushion.
  • a representative configuration of the occupant restraint system according to the present invention is an occupant restraint system for restraining an occupant seated on a seat of a vehicle, the occupant restraint system having a bag-like shape.
  • an airbag cushion that is wound or folded in a predetermined storage form, is assembled to a frame on at least one end side of the seat back in the width direction of the seat, and inflates and deploys forward of the seated occupant; and an inflator whose at least a portion is inserted into a frame and assembled together with the airbag cushion; 2 belts, wherein the second belt is positioned behind the first belt on the surface of the opposite side of the airbag cushion when the airbag cushion is inflated and deployed, and the airbag in the stored form is provided.
  • the first belt is positioned farther from the frame than the second belt when the bag cushion is attached to the frame.
  • the airbag cushion is supported from the side opposite to the occupant by the first belt and the second belt, and the tension of the first belt and the second belt is used to improve the occupant restraint performance of the airbag cushion. can be planned.
  • the first belt When the inflator is assembled on the outer side of the frame in the width direction, the first belt may be positioned on the outer side in the width direction of the second belt.
  • the tension of the first belt and the second belt can be used to support the airbag cushion, and the occupant restraint performance of the airbag cushion can be improved.
  • the first belt may be positioned forward of the second belt when the inflator is assembled to the front end of the frame.
  • the tension of the first belt and the second belt can be used to support the airbag cushion, and the occupant restraint performance of the airbag cushion can be improved.
  • the above airbag cushions may be installed on one end side and the other side of the seat back in the width direction. According to this configuration, the occupant can be protected from both the left and right sides with a high restraining force.
  • the portion of the airbag cushion forward of the first belt may be folded back to the outside of the first belt. With this configuration, the airbag cushion can be efficiently stored in the seat back.
  • the portion forward of the first belt of the airbag cushion may be folded inside the portion rearward of the first belt. Also with this configuration, the airbag cushion can be efficiently stored in the seat back.
  • the portion of the airbag cushion between the second belt and the first belt may be folded outward in the width direction of the seatback of the second belt.
  • the airbag cushion can be efficiently stored in the seat back. Further, when the airbag cushion is unfolded due to the inflow of gas, the portion of the airbag cushion in front of the second belt behaves toward the occupant. Therefore, it is possible to further improve the occupant restraint performance of the airbag cushion.
  • all or part of the first belt may overlap the second belt in the width direction of the seat back. This configuration also allows the airbag cushion to be efficiently stored in the seat back.
  • the airbag cushion in the storage mode described above may have the portion forward of the second belt folded inside the portion behind the second belt. This configuration also allows the airbag cushion to be efficiently stored in the seat back.
  • the first belt and the second belt may be slidably connected to the airbag cushion. This configuration makes it possible to inflate and deploy the airbag cushion more smoothly.
  • the airbag cushion has a main chamber supported from the side opposite to the occupant by both the first belt and the second belt when inflated and deployed, and a seatback positioned on the occupant side of the main chamber when inflated and deployed. a sub-chamber that overlaps the first belt when viewed from the direction.
  • the thickness of the front side of the airbag cushion with the above configuration is increased by the sub-chamber, it can inflate and deploy to the front of the occupant's upper body, making it possible to restrain the occupant from the front as well.
  • the above airbag cushion may have a sewn portion that joins the panel of the main chamber and the panel of the sub-chamber.
  • the subchamber can be arranged to overlap the front side of the main chamber.
  • a representative configuration of the method for manufacturing an occupant restraint system is a bag-shaped, wound or folded predetermined storage form that is attached to the seat back of a vehicle seat.
  • a method for manufacturing an occupant restraint device for restraining a seated occupant by means of an airbag cushion that is housed at least one end in the width direction and inflates and deploys forward of the occupant seated on the seat comprising: connecting the first belt and the second belt housed inside to the side of the airbag cushion opposite to the occupant, and connecting the second belt to a portion of the airbag cushion on the rear side of the first belt; The connection is such that the first belt is located outside the second belt in the width direction of the seatback, and the portion of the airbag cushion between the second belt and the first belt is connected to the seat of the second belt.
  • an occupant restraint device and a method of manufacturing the occupant restraint device that can further improve the occupant restraint performance of the airbag cushion.
  • FIG. 2 is a diagram illustrating a state after the occupant restraint system of FIG. 1 is activated; It is the figure which illustrated the state which set
  • FIG. 3 is a top view of the occupant restraint system of FIG. 2 ;
  • FIG. 2 is a cross-sectional view of the airbag cushion in the storage configuration of FIG. 1 taken along the line AA.
  • FIG. 6 is a diagram illustrating a process of folding the airbag cushion in the storage form of FIG. 5; 6 is a diagram illustrating a modification of the airbag cushion in the stowed configuration of FIG. 5;
  • FIG. 4 is a diagram illustrating a first modification of the airbag unit of FIG. 3;
  • FIG. 4 is a diagram illustrating a second modification of the airbag unit of FIG. 3; It is the figure which illustrated the passenger
  • FIG. 4 is a diagram illustrating a third modification of the airbag unit of FIG. 3; It is the figure which illustrated the passenger
  • It is the figure which illustrated the 4th modification of the airbag unit of FIG. FIG. 13(a) is a cross-sectional view taken along line FF of the airbag unit of FIG. 13(a);
  • FIG. 1 is a diagram exemplifying the state of the occupant restraint system 100 according to the present embodiment before being moved.
  • the components housed inside the seat 102 such as the airbag cushions 108, 110, are shown in phantom.
  • the direction in which the occupant 103 is facing is forward, the opposite direction is backward, and the right hand side of the occupant 103 is The right direction and the left side of the occupant 103 are referred to as the left direction.
  • the direction of the head of the occupant 103 is called upward, and the direction of the waist of the occupant 103 is called downward.
  • inner and outer directions are referred to as the inner side and the direction closer to the occupant 103 in the relative positional relationship of a plurality of objects viewed from the occupant 103 seated in the normal posture.
  • the side far from 103 is called the outside.
  • the occupant restraint system 100 includes a pair of left and right airbag units 108 and 110 mainly inside the seat back 104 of the seat.
  • the airbag units 108, 110 are configured including airbag cushions 112, 114 and belt members 116, 118, respectively.
  • the occupant restraint system 100 restrains the occupant 103 (see FIG. 2, etc.) seated on the seat 102 mainly using the airbag cushions 112 and 114 in an emergency such as when the vehicle is impacted.
  • the airbag cushions 112 and 114 are bag-shaped members that can be inflated with gas. It is
  • the belt members 116, 118 are provided for each of the pair of airbag cushions 112, 114 in this embodiment.
  • the belt members 116 and 118 are stored from the seat back 104 of the seat 102 to the seat cushion 106 .
  • FIG. 2 is a diagram illustrating a state after the occupant restraint system 100 of FIG. 1 is activated.
  • FIG. 2( a ) illustrates the occupant restraint system 100 as viewed from the front of the seat 102 .
  • the occupant 103 in FIG. 2(a) is an example of a test dummy AM50 that mimics the physique (height 175 cm, weight 78 kg) that fits 50% of an average American adult male.
  • the pair of left and right airbag cushions 112 and 114 inflate and deploy to both sides of the occupant 103 seated on the seat 102 in the event of a vehicle collision or the like.
  • the airbag cushions 112 and 114 are supported from the side opposite to the occupant 103 by the belt members 116 and 118, respectively, and the occupant restraining force is enhanced.
  • These airbag cushions 112, 114 and belt members 116, 118 have the same symmetrical construction.
  • FIG. 2(b) is a diagram illustrating the occupant restraint system 100 of FIG. 2(a) viewed from the right side of the seat 102.
  • the belt member 116 will be taken as an example representing the belt members 116 and 118 .
  • the belt member 116 is deployed outside the seat 102 together with the airbag cushion 112 by inflating the airbag cushion 112 and tearing the skin of the seat 102 .
  • the belt member 116 is connected to the panel of the airbag cushion 112 on the side opposite to the occupant 103 and is stretched from the seat back 104 to the seat cushion 106 .
  • the belt member 116 is composed of two belts.
  • the belt member 116 includes a front first belt 116a and a rear second belt 116b.
  • the belt member 118 (see FIG. 2A, etc.) also includes a first belt 118a and a second belt 118b.
  • FIG. 3 is a diagram illustrating the state in which the airbag units 108 and 110 of FIG. 2(b) are placed on a plane.
  • the airbag cushions 112 and 114 are exemplified with the panel opposite to the passenger 103 (see FIG. 2(b)) facing forward.
  • the airbag cushions 112 and 114 are bag-shaped members that receive the occupant 103 (see FIG. 2(b)). It is formed by spinning and weaving using Piece Woven).
  • An inflator 120 (see FIG. 5), which is a gas generator, is provided on the rear end side inside the airbag cushion 112 .
  • the inflators that are currently in widespread use include a type that is filled with a gas generating agent and burns it to generate gas, a type that is filled with compressed gas and supplies gas without generating heat, or a type that is filled with a combustible type. There are hybrid types that use both gas and compressed gas. Any type of inflator 120 can be used.
  • the first belt 116a is connected to the front portion of the airbag cushion 112.
  • the second belt 116b is connected to a portion of the airbag cushion 112 on the rear side of the first belt 116a.
  • the belt members 116 and 118 are configured such that the lower end sides of the first belts 116a and 118a and the lower end sides of the second belts 116b and 118b are continuous.
  • FIG. 4 is a top view of the occupant restraint system 100 of FIG.
  • the first belts 116a, 118a are arranged so as to be positioned forward of the second belts 116b, 118b on the surface of the airbag cushion 112 opposite to the occupant 103 when the airbag cushion 112 is inflated and deployed.
  • the second belts 116b, 118b are located behind the first belts 116a, 118a on the surface of the airbag cushion 112 opposite to the occupant 103 when the airbag cushion 112 is inflated and deployed. are arranged like this.
  • the airbag cushions 112 and 114 are held at a plurality of points, and the airbag cushions 112 and 114 are separated from the occupant 103. restricts movement to
  • the belt members 116 and 118 can be used to bias the airbag cushions 112 and 114 toward the occupant 103 and absorb the load of the airbag cushions 112 and 114. It is possible to further improve the occupant restraint performance of the airbag cushions 112 and 114 .
  • the first belt 116a is positioned on the outermost side in the width direction of the seatback 104 with respect to the center C1 of the seatback 104 in the left-right direction.
  • the portion P1 where the second belt 116b is located is set to be positioned outside the outermost portion P2 of the second belt 116b.
  • the outermost portion P3 of the first belt 118a in the width direction of the seat back 104 is positioned outside the outermost portion P4 of the second belt 116b. To position.
  • the inflated and deployed airbag cushions 112, 114 are held on the front side by the first belts 116a, 118a of the sides opposite to the occupant 103, and on the rear sides by the second belts 116b, 118b. retained.
  • the occupant restraint performance of the airbag cushion 112 can be further improved.
  • the airbag cushions 112 are installed on one side and the other side of the seat back 104 in the width direction, so that the occupant 103 can be protected from both the left and right sides with a high restraining force.
  • FIG. 5 is a sectional view taken along line AA of the airbag cushion 112 in the stored form of FIG.
  • the frame 122 illustrated in FIG. 5 assumes portions along the left and right side surfaces of the seat back 104 in the internal frame of the seat 102 (see FIG. 1 etc.).
  • the airbag unit 108 centering on the airbag cushion 112 is assembled outside the frame 122 in the width direction of the seat back 104 .
  • the airbag unit 108 can also be assembled inside the frame 122 .
  • the first belt 116a is positioned farther from the frame 122 than the second belt 116b when assembled to the frame 122. That is, the first belt 116a is arranged so as to be located closer to the surface than the second belt 116b in the airbag cushion 112 in the stored state.
  • the first belt 116a can be exposed from the interior of the seat back 104 before the second belt 116b. Then, the first belt 116a can quickly move to a front position farther from the frame 112 than the second belt 116b, and can support the airbag cushion 112 appropriately.
  • the inflator 120 employs a cylinder type (cylindrical type) and is built in the rear side of the inside of the airbag cushion 112 with its longitudinal direction facing up and down.
  • a plurality of stud bolts protrude from the main body of the inflator 120, and the stud bolts are fastened to the frame 122 to fix the inflator 120 and the airbag cushion 112 to the seat 102 (see FIG. 1).
  • the airbag cushion 112 can be efficiently stored in the seat back 104 (see FIG. 1) by devising a method of folding the airbag cushion 112, thereby realizing an occupant restraint system capable of exhibiting high occupant restraint performance. ing.
  • the airbag cushion 112 has a cushion rear portion 124 rearward from the second belt 116b, a cushion intermediate portion 126 between the second belt 116b and the first belt 116a, and a A forward cushion front portion 128 can be separated from the first belt 116a.
  • the intermediate cushion portion 126 and the front cushion portion 128 ahead of the second belt 116b are positioned inside the rear cushion portion 124 behind the second belt 116b. folded.
  • the cushion intermediate portion 126 between the second belt 116b and the first belt 116a is folded outside the second belt 116b in the width direction of the seat back 104. At this time, the intermediate cushion portion 126 is folded so that all or part of the first belt 116a overlaps the outside of the second belt 116b when viewed from the width direction of the seat back 104 . As a result, when the airbag cushion 112 in the stowed state is stowed in the seat 102, the first belt 116a is located outside the seat back 104 in the width direction relative to the second belt 116b.
  • a cushion front portion 128 forward of the first belt 116a is folded back to the outside of the first belt 116a so as to be accommodated inside the cushion rear portion 124. ⁇ These configurations allow the airbag cushion 112 to be efficiently accommodated within the seat back 104 (see FIG. 1).
  • FIG. 6 is a diagram illustrating the process of folding the airbag cushion 112 in the stored form of FIG.
  • FIG. 6 shows the flow of the manufacturing method of the occupant restraint system 100 of this embodiment.
  • FIG. 6(a) is a diagram of the state in which the airbag cushion 112 is spread out on a plane. Prior to the process of folding the airbag cushion 112, the process of connecting the first belt 116a and the second belt 116b to the panel of the airbag cushion 112 opposite to the occupant is performed. The second belt 116b is connected to a location on the rear side of the first belt 116a.
  • FIG. 6(b) is a BB cross-sectional view of the airbag cushion 112 of FIG. 6(a).
  • the airbag cushion 112 is shaped like a flat bag into which gas flows.
  • FIG. 6(c) is a diagram in which the lower portion 132 of the airbag cushion 112 of FIG. 6(a) is folded forward.
  • FIG. 6(d) is a CC sectional view of the airbag cushion 112 of FIG. 6(c).
  • a lower portion 132 of the airbag cushion 112 is folded inside the upper portion 130 so as to be turned inside out. Such folding of the bag-shaped portion inside out into the other portion is also called tuck-in.
  • FIG. 6(e) is a diagram in which the front side of the airbag cushion 112 of FIG. 6(c) is folded forward.
  • FIG. 6(f) is a DD sectional view of the airbag cushion 112 of FIG. 6(e).
  • the cushion intermediate portion 126 between the second belt 116b and the first belt 116a is folded outwardly of the second belt 116b in the width direction of the seat back 104.
  • the first belt 116a is positioned outside the second belt 116b in the width direction of the seat back 104.
  • a process of overlapping all or part of the first belt 116a on the outside of the second belt 116b when viewed from the width direction of the seat back 104 is also performed.
  • FIG. 6(g) is a diagram in which the airbag cushion 112 of FIG. 6(e) is further folded.
  • FIG. 6(h) is an EE cross-sectional view of the airbag cushion 112 of FIG. 6(g).
  • the intermediate cushion portion 126 and the front cushion portion 128 ahead of the second belt 116b are folded inside the rear cushion portion 124 behind the second belt 116b.
  • the cushion front portion 128 forward of the first belt 116a is folded back to the outside of the first belt 116a.
  • a portion of the lower portion 132 of the airbag cushion 112 is pulled out from the interior of the cushion rear portion 124 and shaped to complete the manufacture of the airbag cushion 112 in the stowed configuration.
  • the airbag cushion 112 can be efficiently stored in the seat back 104, and the occupant restraint device 100 having high occupant restraint performance using the tension of the first belt 116a and the second belt 116b. can be manufactured.
  • the airbag cushion 112 in the stored form when the inflow of gas unfolds the airbag cushion 112, particularly the intermediate portion 126 of the cushion, the first belts 116a, 118a (see FIG. 4) and the second belts 116b, 118b are unfolded.
  • This tension causes the mid cushion portion 126 and the front cushion portion 128 to move toward the occupant 103 . Therefore, with the airbag cushion 112 manufactured by the manufacturing method of the occupant restraint system 100, it is possible to further improve the occupant restraint performance.
  • FIG. 7 is a diagram illustrating a modified example (airbag cushion 160) of the airbag cushion 112 in the stored form of FIG.
  • the same components as those already explained are denoted by the same reference numerals, and thus the explanation of the already mentioned components is omitted.
  • the same names as the components already described are given different reference numerals, they have the same functions unless otherwise specified.
  • a cushion front portion 162 forward of the first belt 116a is folded inside the cushion intermediate portion 126 behind the first belt 116a. Also with this configuration, it is possible to realize the airbag cushion 160 that can be efficiently stored in the seat back and has a high occupant restraint performance.
  • FIG. 8 is a diagram illustrating a first modification (airbag units 180, 182) of the airbag units 108, 110 of FIG.
  • the airbag unit 180 has a plurality of loops 184 on the side of the airbag cushions 112, 114 facing away from the occupant for the passage of respective belts.
  • the loops 184 slidably connect the first belts 116a, 118a and the second belts 116b, 118b to the airbag cushions 112,114.
  • the airbag units 180, 182 prevent the airbag cushions 112, 114 from being pulled in an unexpected direction by the respective belts, allowing the airbag cushions 112, 114 to be inflated and deployed more smoothly. ing.
  • FIG. 9 is a diagram illustrating a second modification (airbag unit 200) of the airbag unit 108 of FIG.
  • FIG. 9A is a diagram illustrating an airbag cushion 202 included in the airbag unit 200 as viewed from the passenger side.
  • the airbag cushion 202 has an inflatable region 204 that is inflated with gas and divided into a plurality of small chambers.
  • the inflatable region 204 of the airbag cushion 202 includes a wide inflatable main chamber 206 and an inflatable sub-chamber 208 overlapping the front portion of the main chamber 206 .
  • the main chamber 206 is formed in a range supported from the side opposite to the occupant by both the first belt 116a and the second belt 116b when inflated and deployed.
  • the sub-chamber 208 is positioned on the occupant side of the main chamber 206 when inflated and deployed, and is formed in a range that overlaps the first belt 116a when viewed from the width direction of the seat back 104 .
  • FIG. 9(b) is a diagram showing a state in which the sub-chamber 208 of the airbag cushion 202 of FIG. 9(a) is expanded.
  • a panel on the main chamber 206 side of the sub-chamber 208 and a panel on the sub-chamber side of the main chamber 206 are provided with joining regions 210a and 210b that are joined to each other by welding or the like.
  • the joint regions 210a and 210b are provided with vent holes 212a and 212b that are connected to each other and allow gas to pass therethrough, and the gas is sent from the main chamber 206 to the sub-chamber 208 through each vent hole.
  • FIG. 10 is a diagram illustrating an occupant restraint system 220 employing the airbag unit 200 of FIG. 9(a).
  • FIG. 10 illustrates an occupant restraint system 220 corresponding to FIG.
  • the airbag cushion 202 of the airbag unit 200 and the airbag cushion 216 of the airbag unit 214 having a symmetrical configuration are increased in thickness on the front side by the sub-chambers 208 and 218, so they are inflated and deployed to the front of the upper body of the occupant 103. and restrain the occupant 103 from the front.
  • the airbag cushions 202, 214 also realize a storage form that can be efficiently stored in the seat back 104 (see FIG. 1), and also achieve high cushioning force using the tension of the first belts 116a, 118a and the second belts 116b, 118b.
  • An occupant restraint device 220 having occupant restraint performance can be realized.
  • the airbag cushions 202, 214 are also folded in the manner described with reference to FIG. It can be folded and stored in the seat 102. According to this folding method, when the airbag cushions 202 and 214 are inflated and deployed, the tension of the first belts 116a and 118a and the second belts 116b and 118b is used to expand the sub-chambers 208 and 218 of the airbag cushions 202 and 214. It is possible to cause the behavior toward the occupant 103 side immediately, and to exhibit high occupant restraint performance.
  • FIG. 11 is a diagram illustrating a third modification (airbag unit 240) of the airbag unit 108 of FIG.
  • FIG. 11(a) is a diagram illustrating the airbag cushion 242 of the airbag unit 240 as viewed from the passenger side.
  • the airbag cushion 242 includes a wide inflatable main chamber 246 and an inflatable sub-chamber 248 overlapping the front portion of the main chamber 246 .
  • the main chamber 246 is formed in a range supported from the side opposite to the occupant by both the first belt 116a and the second belt 116b when inflated and deployed.
  • the sub-chamber 248 is positioned on the occupant side of the main chamber 246 when inflated and deployed, and is formed in a range that overlaps the first belt 116a when viewed from the width direction of the seat back 104 .
  • FIG. 11(b) is a diagram of a state in which the sub-chamber 248 of the airbag cushion 242 of FIG. 11(a) is expanded.
  • a plurality of sewn portions 250 and 252 are provided in the subchamber 248 .
  • the sewn portion 250 is a region where the panel on the main chamber side of the sub-chamber 248 and the panel on the sub-chamber side of the main chamber 246 are joined by sewing.
  • the sewn portion 252 is a region where the panels of the sub-chamber 248 opposite to the occupant are sewn together to form a folded portion 254 (see FIG. 11(a)) in the sub-chamber 248 .
  • FIG. 12 is a diagram illustrating an occupant restraint system 260 employing the airbag unit 240 of FIG. 10(a).
  • FIG. 12 illustrates an occupant restraint system 260 corresponding to FIG.
  • the airbag cushion 242 of the airbag unit 240 and the airbag cushion 264 of the airbag unit 262 having the symmetrical structure are inflated and deployed to the front of the upper body of the occupant 103 because the thickness of the front side is increased by the subchambers 248 and 268. and restrain the occupant 103 from the front.
  • the airbag cushions 242, 264 also realize a storage form that can be efficiently stored in the seat back 104 (see FIG. 1), and also provide high cushioning force using the tension of the first belts 116a, 118a and the second belts 116b, 118b.
  • An occupant restraint device 260 having occupant restraint performance can be realized.
  • the airbag cushions 242 and 264 are also folded in the manner described with reference to FIG. It can be folded and stored in the seat 102. According to this folding method, when the airbag cushions 242 and 264 are inflated and deployed, the tension of the first belts 116a and 118a and the second belts 116b and 118b is used to expand the sub-chambers 248 and 268 of the airbag cushions 242 and 264. It is possible to cause the behavior toward the occupant 103 side immediately, and to exhibit high occupant restraint performance.
  • FIG. 13 is a diagram illustrating a fourth modification (airbag unit 280) of the airbag unit 108 of FIG.
  • FIG. 13(b) is a diagram illustrating a state before the airbag unit 280 is activated.
  • FIG. 13(a) illustrates only the frame 122 of the seat back 104 of the seat 102, omitting the skin and seat pad (for example, urethane material).
  • the airbag unit can also be installed on either the left or right frame 122 .
  • FIG. 13(b) is an enlarged view of the airbag unit 280 of FIG. 13(a).
  • the airbag unit 280 includes the airbag cushion 112, the inflator 120, and the bracket 282 as a unit. Also, the airbag unit 280 is covered or bundled with a breakable cover or tape.
  • the bracket 282 is a resin member having a certain degree of rigidity, and serves to support the airbag cushion 112 during inflation and deployment.
  • the bracket 282 has a longitudinal shape along the vertical direction of the frame 122 (see FIG. 13(a)) and is installed from the inside to the front side of the frame 122 .
  • the bracket 120 can be formed by containing not only resin but also metal.
  • the bracket 282 has a base portion 284 arranged inside the frame 122 (see FIG. 13(a)) and a reaction force portion 286 that applies a reaction force when the airbag cushion 112 is inflated.
  • the base portion 184 is planar along the frame 122 and can be attached to the frame using bolts, clips, pins, or the like.
  • the reaction force portion 286 is bent from the front side of the base portion 284 and extends outward in the width direction of the seat back 104 . Since the reaction force portion 286 exists, the airbag cushion 122 can be efficiently inflated and deployed forward by pushing the reaction force portion 286 .
  • the inflator 120 is fixed to the reaction force portion 286 using stud bolts (not shown).
  • FIG. 14 is a cross-sectional view of the airbag unit 282 of FIG. 13(a) taken along line FF.
  • the first belt 116a is positioned farther from the frame 122 than the second belt 116b and in front of the second belt 116b. there is That is, the first belt 116a is arranged so as to be located closer to the surface than the second belt 116b in the airbag cushion 112 in the stored state.
  • the first belt 116a is arranged closer to the surface side of the airbag unit 280 than the second belt 116b. Thus, it can be exposed from the inside of the seat back 104 (see FIG. 13A) before the second belt 116b. Then, the first belt 116a can quickly move to a front position farther from the frame 122 than the second belt 116b, and can support the airbag cushion 112 appropriately.
  • each airbag cushion is provided with a belt member, but it is also possible to provide a belt member only on one of the two airbag cushions. Further, the structure is not limited to the configuration in which airbag cushions are provided at both ends of the seat back 104 in the width direction.
  • the present invention can be used for an occupant restraint device that restrains an occupant seated on a vehicle seat.
  • Airbag unit 202 Airbag cushion 204 Expansion area 206 Main chamber 208 Sub chamber 212a Vent hole 214 Airbag unit 216 Airbag cushion 217 Main chamber , 218 Sub-chamber 220 Occupant restraint device 240 Airbag unit 242 Airbag cushion 244 Expansion region 246 Main chamber 248 Sub-chamber 250 Sewing portion 252 Sewing portion 254 ... folding part 260 ... occupant restraint device 262 ... airbag unit 264 ... airbag cushion 266 ... main chamber 268 ... sub-chamber 280 ... airbag unit 282 ... bracket 284 ... base portion 286 ... reverse force part

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)

Abstract

[Problème] Utiliser un dispositif de retenue d'occupant qui permet d'améliorer davantage la performance de retenue d'un occupant d'un coussin de sécurité gonflable. [Solution] Ce dispositif de retenue d'occupant (100) comprend : un coussin de sécurité gonflable (112) qui est rangé, dans une forme de rangement prescrite, à l'intérieur d'un dossier (104) ; un dispositif de gonflage (120) ; et une première ceinture (116a) et une seconde ceinture (116b) qui sont reliées à une partie du coussin de sécurité gonflable (112) à l'opposé du côté de l'occupant du véhicule (103) et qui sont rangées dans une plage allant de l'intérieur du dossier (104) à l'intérieur d'un coussin de siège (106). La seconde ceinture (116b) est disposée à l'arrière de la première ceinture (116a) sur un côté du coussin de sécurité gonflable (112) qui a été déployé et étendu à l'opposé du côté de l'occupant. Dans un état dans lequel le coussin de sécurité gonflable (112) dans la forme de rangement est rangé en étant assemblé à un cadre (122), la première ceinture (116a) est disposée à un emplacement plus éloigné du cadre (122) par rapport à la seconde ceinture (116b).
PCT/JP2022/014002 2021-04-09 2022-03-24 Dispositif de retenue d'occupant et procédé de fabrication de dispositif de retenue d'occupant WO2022215543A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2023512933A JP7464792B2 (ja) 2021-04-09 2022-03-24 乗員拘束装置および乗員拘束装置の製造方法
CN202280023610.6A CN117500701A (zh) 2021-04-09 2022-03-24 乘员约束装置及乘员约束装置的制造方法
EP22784528.6A EP4321393A1 (fr) 2021-04-09 2022-03-24 Dispositif de retenue d'occupant et procédé de fabrication de dispositif de retenue d'occupant

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021066810 2021-04-09
JP2021-066810 2021-04-09

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WO2022215543A1 true WO2022215543A1 (fr) 2022-10-13

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EP (1) EP4321393A1 (fr)
JP (1) JP7464792B2 (fr)
CN (1) CN117500701A (fr)
WO (1) WO2022215543A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6029993A (en) * 1997-10-06 2000-02-29 Inova Gmbh Technische Entwicklungen Side airbag device, method for operation thereof and vehicle seat therewith
JP2013159220A (ja) * 2012-02-03 2013-08-19 Toyota Motor Corp 車両用シート
WO2016039160A1 (fr) 2014-09-08 2016-03-17 オートリブ ディベロップメント エービー Dispositif de retenue d'un occupant de véhicule
WO2020017282A1 (fr) * 2018-07-19 2020-01-23 オートリブ ディベロップメント エービー Dispositif de retenue de passager
JP2020062923A (ja) * 2018-10-16 2020-04-23 オートリブ ディベロップメント エービー 乗員拘束装置
WO2021111748A1 (fr) * 2019-12-06 2021-06-10 オートリブ ディベロップメント エービー Dispositif de retenue de passager
WO2022024620A1 (fr) * 2020-07-28 2022-02-03 オートリブ ディベロップメント エービー Dispositif de retenue de passager

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6029993A (en) * 1997-10-06 2000-02-29 Inova Gmbh Technische Entwicklungen Side airbag device, method for operation thereof and vehicle seat therewith
JP2013159220A (ja) * 2012-02-03 2013-08-19 Toyota Motor Corp 車両用シート
WO2016039160A1 (fr) 2014-09-08 2016-03-17 オートリブ ディベロップメント エービー Dispositif de retenue d'un occupant de véhicule
WO2020017282A1 (fr) * 2018-07-19 2020-01-23 オートリブ ディベロップメント エービー Dispositif de retenue de passager
JP2020062923A (ja) * 2018-10-16 2020-04-23 オートリブ ディベロップメント エービー 乗員拘束装置
WO2021111748A1 (fr) * 2019-12-06 2021-06-10 オートリブ ディベロップメント エービー Dispositif de retenue de passager
WO2022024620A1 (fr) * 2020-07-28 2022-02-03 オートリブ ディベロップメント エービー Dispositif de retenue de passager

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CN117500701A (zh) 2024-02-02
JPWO2022215543A1 (fr) 2022-10-13
JP7464792B2 (ja) 2024-04-09

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